or Church of St. Anthony of Padua at Czerniaków, Warsaw are examples of the Baroque's richly decorative (see stucco) style. Vault or dome painting, subordinate to the overall aesthetic design, compounded the impression by using optical illusion effects. Sculpture also had the primary function of complementing the design of the interiors. The Krasiński Palace built in Warsaw in the second half of the 17th century by Tylman van Gameren is an impressive monumental structure. Afterwards, however, residential forms more convenient and intimate, while still preserving much of the former grandeur, were given preference. The Wilanów Palace of King John III is an early representative of this trend. The Rococo style was triumphant under the Wettin rulers and the present Saxon Palace in Warsaw was rebuilt by Augustus II in that manner. Numerous magnate residencies, in Warsaw and throughout the country, where the former fortifications were replaced with parks and pavilions, followed the trend. Gentry manors were built of wood and so were many country churches. Their builders were local and interesting native styles are still represented in extant structures. Jerzy Siemiginowski-Eleuter was a prominent painter, one of several who worked for John III. Krzysztof Lubieniecki and Teodor Lubieniecki of the Polish Brethren, painted in the West. Szymon Czechowicz represented religious painting in the 18th century. Of particular interest is the Sarmatist portrait painting. Usually anonymous, it often faithfully conveys crucial individual characteristics of ordinary Polish nobles and magnates, even if constrained by its artistic convention. Coffin portraits are an important subcategory of this type. Even with its civilizational influence diminished, the Commonwealth continued as a medium or conduit of cultural and diplomatic contacts between the West and the East, with the Polish culture and language being of international importance and retaining its attractiveness in a number of foreign (Tatar, Russian, Wallachian, Moldavian, German) circles and uses. This cultural attraction contributed to the Polonization in the 17th century of the majority of Lithuanian and Ruthenian nobility of the Commonwealth. The ethnically non-Polish urban classes were much less affected by this process and the peasantry still less, so that the apparent cultural and linguistic uniformity of the country was largely an illusion. The ethnically Polish groups west of the Commonwealth (in Silesia and Pomerania) were often disregarded by the Polish establishment as non-nobles, and their ties with the country of their ethnic origin were getting weaker. These factors made it later difficult